Apparatus for making soap.



v A. PRITGHARD. APPARATUS'FOR MAKING SOAP.

APPLICATION FILED JAILZO. 1908.

910,083. Patented Jan. 19, 1909.

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A. H. PRITGHARD;

APPARATUS FOR MAKING SOAP.

APPLICATION FILED JAN,20.1908.

910,083. Patented Jan.19,v1909.

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A. H. PRITOHARD. APPARATUS FOR MAKING SOAP.

APPLICATION FILED JAN-20,1908.

Patented Jan. 19

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ALFRED ll. PRITUHARD, Ol TORONTO, ONTARIO, CANADA.

APPARATUS FOR MAKING SOAP.

' Specification of Letters Patent.

Patented Jan. 19-, 1909.

Application filed January 20, 1908. Serial No. 411,866.

To all whom it may concern:

Be it known that I, ALFRED H. PRITCHARD,

mixture and circulate it over the heating ponification is assured.

In brief, my apparatus comprises a vessel of oblong form with rounded ends in which are placed two, annular headers of smaller diameter than the width of the vessurfaces of the apparatus that complete sasel, and each provided with a series of steam tubes extending up therefrom. Each header is raised above the bottom to admit of the,

introduction at the bottom of a rotary scraper connected to acentral shaft. To each shaft is connected a hftmgscrew adapted to cause a circulation of the :oap up the central space between the tubes and down outside the tubes. The material at the bottom of the prismoidal spaces between the headers and tubes is worked towards the center to bring itwithin the scope of the .scra ers and liftin screws b reci )rocatin D 2') agitators which work from the sides toward the center at the bottom of the vessel.

Figure 1 IS a vertical longitudinal section of my improved apparatus. Fig. 2 is a plan. view of the same. Fig-3 1s a vertical cross section.

In the drawings like letters of reference indicate corresponding parts in the different figures.

A is av steam jacketed vessel, a being the steam-inlet, and b a drip cook or outlet. This vessel is preferably oblong in plan with semi-circular ends.

B are gate valves communicating with the interior of the vessel, through its double bottom, which serve to empty the vessel.

Above the bottomof the interior of the vessel are located at opposite ends the annular headers D, supported by brackets 03 on the-inside of the vessel. Each header is of less diameter than the Width of the vessel, and is provided with a steam inlet pipee' and with an outlet pipe extending through the side of the vessel, and provided of course With suitable valves. In the drawings the outlet pipe f of the left hand header is shown connected with the inlet pipe 6 of the right hand header so that the steam passes from one header to the other.

E ntending up from each header is a series of steam pipes E, each closed at its upper end. -Each pipe will preferably be divided by a vertical partitionto aid circulation i the pipe, but this is an ordinary device and forms no part of my invention.

Centrally .within each header and it ring of steam pipes issuitably journaled a vertical shaft I driven by bevel gearing G from .the driving shaft H-suitably journaled in bearings connected to the upper part of the vessel. The shaft is preferably provided with a. fast, a loose and reversing pulley as shown. Formed on each vertical shaft is a lifting screw or worm I extending'from a point near the bottom of the vessel to the upper ends of the pipes ,E. Secured to the bottom of each'shaft is a rotary scraper J,

consisting of one or morcarms preferably inclined, as shown, so that when r'otatiugin the direction indicated by arrow itwill lift the soap mixture from the bottom of the vessel. These arms extend substantially to the in nor circumference "of the vessel.

It will be noted on reference to Fig. 2 that between thetwo heating devices, formed by the headers with their vertical pipes, and the sides of the vessel are formed two substantially prismoidal spaces substantially tri-i angular in cross section. In these s aces the saponified soap mixture would be iable to accumulate. To avoid this and cause a perfect circulationI provide an agitator located at the bottom of each space. Each agitator comprises a series of slats K secured to a bar L. These slats are set at an angle to the horizontal, preferably being inclined towards the adjacent side of the vessel. This bar L rests upon a track M, and the slats arc notched to pass on each side of this track in orderthat they may extend close down to the bottom of the vessel. By reciprocating these agitators-on the tracks the soap mixture will be lifted from the bottom of the vessel and moved towards tho centcr where it will come within the sphere of action of the scrapers J and the worms I, which produce a constant suction tending to draw material from all sides and force it upward within the spaces inclosed by vertical pipes E. For thepurpose of operating these agitators I fulcrum adjacent to each agitator a bell crank lever 'N. Each bell crank lever is connected by a crank shafts is directly driven by a bevel pitman O with a crank -formed on a crank shaft P suitably ournaled on the vessel at right angles to the shaft l-l. Each of these gear wheel Q, from a bevel gear wheel R fast on the shaft H.

The operation of my device is substantially as follows ;VVhen the vessel is full of the soap mixture the rotation of the lifting screws or Worms I draws it up through the passageways formed by the annular headers and their rows of connected pipes and discharges it out into the space between the pipes and the inner walls of the vessel. The

soap mixture passes down this space to the bottom where it is cut by the rotary scrapers J and the agitators, and is assisted to move into the center to be again lifted by the screws I. Thus a constant and thorough agitation of the soap mixture is obtained, and it is constantly circulated over the heated surfaces of the apparatus. I am thus enabled to secure a completesaponification and am enabled to produce as large a quantity of soap from a given quantity of material as can possibly be obtained, and in a comparatively short space of time hat I claim as myinvention is 1. In soap making apparatus the combina tion of an oblong vessel, two externally substantially cylindrical heatingdevices suspended in said vessel side by side above the bottom, and providing vertical internal passages for soap material; means for elevating soap material through said passages; and agitators in the spaces between the heating devices adapted to move soap material towards the heating devices.

Q. In soap making apparatus the combina tion of an oblong vessel, two externally substantially cylindrical heating devices suspended in said vessel side by side above the bottom, and providing vertical internal passages tor soap material; means for elevating soap material. through said passages; and agitators located at the bottom of the vessel in the spaces between the heating devices and movable to and from the sides of the vessel.

3. in soap making apparatus the combination of an oblong vessel, two externally substantially cylindrical heating devices suspended in said vessel side by side above the bottom, and providing vertical internal pas-.

sages for soap material; means for elevating soap material through said passages; and

, agitators comprising a series of longitudinal parallel slatssuitably connected together at an angle to the horizontal, located at the bottom of the vessel in the spaces between the heating devices, and movable -to and from the sides of the vessel.

4. In soap making apparatus the combina tion oian oblong vessel with rounded ends; two annular headers of less diameter than the width of the vessel and located within the latter above the bottom; steam connec tions tor-the headers; steam heating pipes extending up from the headers; a vertical the latter above the bottom; steam connections for the headers; steam heating pipes extending up from the headers; a vertical shaft suitably carried centrally of each header; alrotary scraper connected to each shaft at the bottom of the inside of the vessel; va lifting screw on each of said shafts;

and agitators located at the bottom of the vessel in the spaces between the heating devices, and movable to and from the sides of the vessel.

, 6. In soap making apparams the combinaj tion of an oblong vessel with rounded ends; two annular headers of less diameter than;

the width of the vessel and located within the latter above the bottom; steam connections for the headers; steam heating pipes extending up from the headers; a vertical snaft suitably carried centrally of each header; a rotary'scraper connected toeach shaft at the bottom of the inside of the vessel; a lifting screw on each of said'shafts;

and agitators comprising a series of longi-.

tudinal parallel .slats suitably connected to gether at an angle to the horizontal, located at the bottom of the vessel in the spaces between. the heating deviees, and movable to and from the sides of the vessel.

Toronto, Ont, 9th December, 1907.

ALFRED n. PRITCHARD. Signed in the presence of-- D. S. Tonnnn, JOHN G. ltmour. 

